my below validation is not working.But it is working in other html pages when i test .please tell me whether there is any error in my php page.
<?php
require_once('common/dblayer.php');
$db=new dblayer();
$enc_id=$_GET["id"];
$agreementdetails=$db->getfeedback($enc_id);
$companyname = $agreementdetails[0]["company"];
$fullname = $agreementdetails[0]["name"];
$agreed = $agreementdetails[0]["agreed"];
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>CLIENT SATISFACTION SURVEY © </title>
<SCRIPT LANGUAGE="JavaScript" TYPE="text/javascript">
<!--
function validate(){
len = document.acceptform.check1.length;
for (i = 0; i <len; i++) {
if (document.acceptform.check1[i].checked) {
return true;
}
}
else {
alert("No Location Chosen");
return false;
}
}
-->
</SCRIPT>
</head>
<body>
<form name="acceptform" method="post" action="reg_feedback1.php" onSubmit="return validate();">
<table width="889" align="center">
<tr><td width="879">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td colspan="4" align="center" class="style1"><h2>CLIENT SATISFACTION SURVEY</h2></td>
<td width="19%" align="left" valign="top" style=" height:50px; vertical-align:text-bottom; text-align:right"><div valign="top">®</div>
</td>
</tr>
<tr>
<td height="2" colspan="3" style="border-bottom-style: none; border-bottom-width: medium; height:5px;"> </td>
</tr>
</table><hr />
</td></tr><tr><td align="right" valign="top">
<table width="164" align="right" cellpadding="0" cellspacing="0" class="style2">
</table></td></tr><tr><td>
<blockquote>
<blockquote>
<p class="style1"><strong> What is Important to you?</strong></p>
<p class="style1">Indicate the level of importance for each issue listed below as they pertain to your projects in general (kindly click the number): </p>
</blockquote>
</blockquote></td>
</tr><tr><td height="58">
<table width="686" border="1" align="center" cellpadding="3" cellspacing="0" class="border1">
<tr>
<td width="148" align="center"> <span class="style5">1 </span></td>
<td align="center"> <span class="style5">2 </span></td>
<td align="center"> <span class="style5">3 </span></td>
<td align="center"> <span class="style5">4 </span></td>
<td align="center"> <span class="style5">5</span></td>
</tr></table>
</td></tr>
<tr><td height="21"> </td>
</tr><tr><td>
<table width="496" border="0" align="center">
<tr>
<td width="492" ><p><strong>The Result Consistent w/</strong>
<? $enc_id=$_GET["id"]; ?>
<input type="hidden" name="enc_id" value="<? echo $enc_id; ?>" />
</p>
</td>
</tr>
</table>
</td></tr><tr><td>
<table width="686" border="1" align="center" cellpadding="3" cellspacing="0" class="border1">
<tr>
<td width="332"><span class="style1"><strong>Original Scope</strong></span></td>
<td width="41"><input type="radio" name="check1" value="1">1</td>
<td width="41"><input type="radio" name="check1" value="2">2</td>
<td width="41"><input type="radio" name="check1" value="3">3</td>
<td width="44"><input type="radio" name="check1" value="4">4</td>
<td width="41"><input type="radio" name="check1" value="5">5</td>
</tr>
</table>
</td></tr><tr><td>
<table width="496" border="0" align="center">
<tr>
<td width="492"><p><strong>The Services offered to you, in terms of </strong></p></td>
</tr>
</table>
</td></tr><tr><td >
<table width="686" border="1" align="center" cellpadding="3" cellspacing="0" class="border1">
</tr>
</table></td></tr><tr><td height="48" align="center">
<input type="submit" name="submit" value="Next">
</td>
</tr>
</table>
<?
}
?>
</form>
</body>
</html>